Allied Telesis AT-AR042, AT-AR040-10, AT-AR041-00 manual AT-AR048 NSM, DS3 Interface

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Network Service Module

AT-AR048 NSM

The AR048 NSM provides a single unchannelised DS3 interface with two BNC connectors for transmit and receive. The front panel of the AT-AR048 NSM is shown in Figure 9 and the functions of the LEDs are described in Table 4.

Figure 9: AT-AR048 NSM

RXTX

LOS

LOF

Loop

AIS

Activity FERF

Table 4: AT-AR048 LEDs

LED

State

Function

 

 

 

Active

Green

Lit when the Line Interface Unit (LIU) is receiving a signal.

 

 

 

Loop

Green

Lit when any loopback is active.

 

 

 

LOS

Amber

Lit when the received signal is lost. This usually indicates a network

 

 

disruption, such as a cable being disconnected or a device failure.

 

 

 

LOF

Amber

Lit when the DS3 framer cannot extract valid frames from the

 

 

received signal.

 

 

 

AIS

Amber

Lit when an Alarm Indication Signal is detected.

 

 

 

FERF

Amber

Lit when a Far End Receive Failure signal is detected. This indicates

 

 

the far end is receiving an AIS, LOS, or LOF signal.

 

 

 

DS3 Interface

The AT-AR048 NSM provides a single standards-based unchannelised DS3 interface. The interface has the following features:

■44.736Mbit/s interface rate, 44.210Mbit/s payload data rate

■Separate transmit (Tx) and receive (Rx) BNC connectors

■75Ω impedance

■B3ZS line encoding

■Automatic compensation for lines up to 135m (450feet)

■Loop or internal timing

■C-bit framing

■Support for PPP and Frame Relay encapsulation

The interface meets the following specifications:

■ANSI T1.103, Digital Hierarchy - Synchronous DS3 Format

■ANSI T1.107, Digital Hierarchy - Formats

■ANSI T1.231, Digital Hierarchy - Layer 1 In-Service Digital

■RFC 2496 (DS3 MIB)

C613-03022-00 REV K

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Contents Hardware Reference AT-AR040 AT-AR041 AT-AR042 AT-AR048 Network Service Module Hardware ReferencePage Contents Compatible Switches and Routers Devices Covered By This DocumentAT-AR048 Support Hardware Reference Hardware Overview Common FeaturesSupported Port Interface Cards PICs Guidelines and limits for installing PICsInterface numbering LED AT-AR041 and AT-AR042 NSMsLocation of jumpers on BRI NSMs Basic Rate Isdn InterfacesIsdn S/T Interface Cables RJ45 To switch or router To NTBRI S/T loopback plug Testing an AT-AR041 or AT-AR042 NSMPIC DS3 Interface AT-AR048 NSMDS3 Interface Cables Testing an AT-AR048 NSMNetwork Service Module LEDs and What They Mean Switch and Router LEDs for NSMsB1, B2 PIC LEDsReset voip command Hot Swapping Hot Swapping the AT-AR040 NSM with PICsBehaviour of Hot Swapped Interfaces Configured manually Troubleshooting Obtaining Documentation and Resources Network Service Module

AT-AR040, AT-AR040-10, AT-AR048, AT-AR041-00, AT-AR041 specifications

Allied Telesis has established itself as a reputable brand in the networking solutions market, and its AT-AR Series routers further exemplify their commitment to providing robust networking technology. The AT-AR042, AT-AR041, AT-AR041-00, AT-AR048, and AT-AR040-10 models come packed with features designed to meet the diverse demands of modern networks.

The AT-AR042 is a versatile router designed for small to medium-sized enterprises, offering advanced routing capabilities along with integrated security features. It supports a range of protocols, ensuring seamless connectivity across different network types. One of its standout characteristics is its support for Virtual Private Networks (VPNs), facilitating secure remote access for employees.

The AT-AR041 and the AT-AR041-00 models are specifically crafted to deliver dependable performance in both wired and wireless environments. They offer high-speed connectivity and are equipped with Layer 3 routing features, which is essential for effective traffic management in more complex network setups. These models also incorporate essential security protocols, reducing the risk of unauthorized access and ensuring data integrity.

The AT-AR048 extends the range of capabilities further with its advanced features aimed at larger organizations. It offers comprehensive Quality of Service (QoS) functionality, enabling prioritized traffic management which is particularly important in VoIP and video conferencing applications. Its multiple WAN support allows for load balancing, ensuring consistent uptime and optimized network performance during peak usage times.

Lastly, the AT-AR040-10 rounds out the series by offering a cost-effective solution without skimping on the essential features expected of a high-performance router. It comes with an intuitive management interface that simplifies configuration and monitoring, making it a favorable choice for IT staff.

Collectively, these routers incorporate technologies such as IPv6 support, SNMP for network management, and firewall capabilities to provide a secure and efficient networking environment. Additionally, they uphold the industry standards necessary for interoperability with existing systems.

In conclusion, the Allied Telesis AT-AR Series offers a range of products catering to the varying needs of businesses. From small offices to larger enterprises, these routers provide the essential features and capabilities needed to ensure reliable connectivity, secure access, and efficient network management. Their combination of performance, scalability, and security makes them an attractive choice for organizations looking to enhance their networking infrastructure.
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